Hi, I am new to the gnuradio environment..so please forgive
me... I have an USRP B200 and I am looking to save to a file I
& Q samples of bursty, random (ALOHA) messages sampled at
high rate, for furter processing (in a repeatable fashion). Of
course it is not possible to save 15--20 mminutes of data at
50MSPS, but using something like a "valve" (deprecated in GRC)
it vould be possible:
1) to detect in real time the burst data transmission
2) to open the valve towards a file sink
A separate file could be used to record timestamp and/or
length of data blocks recorded
Looking at GRC I haven't found any useable block to build
a valve used at run time based on a threshold (e.g. output of
a filter to detect the TX random signal) . Could anybody help?
Thanks a lot